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Publication date
Priority to DEN24827DpriorityCriticalpatent/DE460102C/en
Application grantedgrantedCritical
Publication of DE460102CpublicationCriticalpatent/DE460102C/en
B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
B23G5/00—Thread-cutting tools; Die-heads
B23G5/02—Thread-cutting tools; Die-heads without means for adjustment
B23G5/04—Dies
Landscapes
Engineering & Computer Science
(AREA)
Mechanical Engineering
(AREA)
Perforating, Stamping-Out Or Severing By Means Other Than Cutting
(AREA)
Description
Abb. i.Fig.i.
Abb. 2.Fig. 2.
Claims (2)
Patentansprüche:Patent claims:1. Gewindeschneideisen, dadurch gekennzeichnet, daß die Gewindestege (c)
nach beiden Seiten zu verschmälert sind.1. Thread cutting die, characterized in that the thread webs (c)
are narrowed on both sides.2. Schneideisen nach Anspruch 1, dadurch gekennzeichnet, daß zum Zwecke
der beiderseitigen Gewindestegverschmälerung die Spanlöcher («) nach beiden Seiten
kegelig oder in ähnlicher Weise derart erweitert sind, daß die Erweiterungen
an den äußeren Enden das Gewindeloch (Jb) in an sich — bei einseitig kegeliger
Erweiterung der Spanlöcher — bekannter Weise überschneiden.2. Die according to claim 1, characterized in that for the purpose of the two-sided thread web narrowing the chip holes («) are widened conically or in a similar manner on both sides in such a way that the extensions at the outer ends of the threaded hole (Jb) in per se - at One-sided conical expansion of the chip holes - overlap in the known way.